Rockwell Automation 1336T PLC Comm. Adapter, Series B, FRN 2.xx-3.xx User Manual

Page 82

5–8

Publication 1336 FORCE–5.13 –– September, 1998

NOTE: Bit 0 is not used. Also, the SCANport device number is
determined by the SCANport connection it is plugged into.

If a bit is set to 0 for a mask parameter, the control function is
disabled. If a bit is set to 1, the control function is enabled.

There are three levels of masking control functions:

Direction
Start
Jog
Reference
Clear Fault
Reset Drive

Port Enable

Local

The Port Enable mask can enable or disable all of the device’s
control functions. If the Port Enable mask is set to enable the control
functions, the control is passed to the Local Mask. The Local Mask
can allow a device to take full control of a drive. If the device does
not have full control, then the individual masks can take effect.

Setting the Loss of Communications Fault

You can specify how you want to be notified if SCANport loses the
connection to a port.

If you want a

communications loss to

be:

Then:

Reported as a fault

Set the appropriate bit in parameter
440 corresponding to the SCANport.

Reported as a warning

Set the appropriate bit in parameter
441 and do not set (clear) the bit in
parameter 440.

Ignored

Do not set (clear) the appropriate bit in
either parameter 440 or 441.

The following table shows you which bits correspond to which ports:

This bit:

Represents:

SCANport device 1

SCANport device 2

SCANport device 3

SCANport device 4

SCANport device 5

For example, if you want a fault condition to be reported if
communication is lost with device 3, you would set bit 3 of
parameter 440.